diff --git a/launch-dedicated.cmd b/launch-dedicated.cmd
index 112881a..ec8441c 100644
--- a/launch-dedicated.cmd
+++ b/launch-dedicated.cmd
@@ -21,6 +21,7 @@ set MOD_SEARCH_PATHS=%MOD_SEARCH_PATHS%,./mods
 
 :start
 if not exist %ENGINE_DIRECTORY%\OpenRA.Game.exe goto noengine
+>nul find %ENGINE_VERSION% %ENGINE_DIRECTORY%\VERSION || goto noengine
 cd %ENGINE_DIRECTORY%
 
 :loop
diff --git a/launch-dedicated.sh b/launch-dedicated.sh
index 407befc..dfbf87f 100755
--- a/launch-dedicated.sh
+++ b/launch-dedicated.sh
@@ -33,7 +33,7 @@ ENABLE_SINGLE_PLAYER="${EnableSingleplayer:-"False"}"
 PASSWORD="${Password:-""}"
 
 cd "${TEMPLATE_ROOT}"
-if [ ! -f "${ENGINE_DIRECTORY}/OpenRA.Game.exe" ]; then
+if [ ! -f "${ENGINE_DIRECTORY}/OpenRA.Game.exe" ] || [ "$(cat "${ENGINE_DIRECTORY}/VERSION")" != "${ENGINE_VERSION}" ]; then
 	echo "Required engine files not found."
 	echo "Run \`make\` in the mod directory to fetch and build the required files, then try again.";
 	exit 1
diff --git a/launch-game.cmd b/launch-game.cmd
index 56a982a..58a27ad 100644
--- a/launch-game.cmd
+++ b/launch-game.cmd
@@ -11,8 +11,9 @@ set MOD_SEARCH_PATHS=%MOD_SEARCH_PATHS%,./mods
 :launch
 set TEMPLATE_DIR=%CD%
 if not exist %ENGINE_DIRECTORY%\OpenRA.Game.exe goto noengine
-
+>nul find %ENGINE_VERSION% %ENGINE_DIRECTORY%\VERSION || goto noengine
 cd %ENGINE_DIRECTORY%
+
 OpenRA.Game.exe Game.Mod=%MOD_ID% Engine.LaunchPath="%TEMPLATE_LAUNCHER%" "Engine.ModSearchPaths=%MOD_SEARCH_PATHS%"  "%*"
 set ERROR=%errorlevel%
 cd %TEMPLATE_DIR%
diff --git a/launch-game.sh b/launch-game.sh
index 3094b39..36b06b4 100755
--- a/launch-game.sh
+++ b/launch-game.sh
@@ -21,7 +21,7 @@ if [ "${INCLUDE_DEFAULT_MODS}" = "True" ]; then
 fi
 
 cd "${TEMPLATE_ROOT}"
-if [ ! -f "${ENGINE_DIRECTORY}/OpenRA.Game.exe" ]; then
+if [ ! -f "${ENGINE_DIRECTORY}/OpenRA.Game.exe" ] || [ "$(cat "${ENGINE_DIRECTORY}/VERSION")" != "${ENGINE_VERSION}" ]; then
 	echo "Required engine files not found."
 	echo "Run \`make\` in the mod directory to fetch and build the required files, then try again.";
 	exit 1
diff --git a/utility.cmd b/utility.cmd
index 500e2e2..0b2339e 100644
--- a/utility.cmd
+++ b/utility.cmd
@@ -12,6 +12,7 @@ set MOD_SEARCH_PATHS=%MOD_SEARCH_PATHS%,./mods
 :start
 set TEMPLATE_DIR=%CD%
 if not exist %ENGINE_DIRECTORY%\OpenRA.Game.exe goto noengine
+>nul find %ENGINE_VERSION% %ENGINE_DIRECTORY%\VERSION || goto noengine
 cd %ENGINE_DIRECTORY%
 
 :loop
diff --git a/utility.sh b/utility.sh
index ac35531..5297226 100755
--- a/utility.sh
+++ b/utility.sh
@@ -27,7 +27,7 @@ fi
 LAUNCH_MOD="${Mod:-"${MOD_ID}"}"
 
 cd "${TEMPLATE_ROOT}"
-if [ ! -f "${ENGINE_DIRECTORY}/OpenRA.Game.exe" ]; then
+if [ ! -f "${ENGINE_DIRECTORY}/OpenRA.Game.exe" ] || [ "$(cat "${ENGINE_DIRECTORY}/VERSION")" != "${ENGINE_VERSION}" ]; then
 	echo "Required engine files not found."
 	echo "Run \`make\` in the mod directory to fetch and build the required files, then try again.";
 	exit 1